Tesla

The ETK-Tesla Prototype is an electric weapon added in the Still Alive update. It makes a reappearance in Sanctum 2 as a secondary weapon. Its primary fire shoots a continuous beam of electricity that has a small area of effect. The Tesla's secondary fire shoots a long-range, high-powered thunderbolt that bounces to up to two additional targets.

The Tesla's damage output on a single target is weaker than the Assault Gun's primary fire, but the Tesla's primary fire affects a small area. This makes it effective against tightly packed groups such as Runners, especially in conjunction with a Slow Field or a Freeze Gun.

The Tesla's secondary fire bounces to up to two nearby enemies, so it is most effective against clusters of three or more enemies. The Freeze Gun is recommended to cluster enemies together. The Tesla's secondary fire is also somewhat effective against flying enemies.

Against the Armored Heavy and Super Heavy enemies in Sanctum 2, the primary fire does 0 damage, but the secondary fire penetrates their armor reliably and at moderate distance.